WO2018042617A1 - Bloc d'alimentation et dispositif de fabrication de feuille pourvu de celui-ci, et procédé de fabrication de feuille - Google Patents

Bloc d'alimentation et dispositif de fabrication de feuille pourvu de celui-ci, et procédé de fabrication de feuille Download PDF

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Publication number
WO2018042617A1
WO2018042617A1 PCT/JP2016/075785 JP2016075785W WO2018042617A1 WO 2018042617 A1 WO2018042617 A1 WO 2018042617A1 JP 2016075785 W JP2016075785 W JP 2016075785W WO 2018042617 A1 WO2018042617 A1 WO 2018042617A1
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WO
WIPO (PCT)
Prior art keywords
flow path
main material
region
feed block
channel
Prior art date
Application number
PCT/JP2016/075785
Other languages
English (en)
Japanese (ja)
Inventor
富山　秀樹
岩村　真
政樹 上田
和哉 横溝
洋輔 田子
Original Assignee
株式会社日本製鋼所
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 株式会社日本製鋼所 filed Critical 株式会社日本製鋼所
Priority to PCT/JP2016/075785 priority Critical patent/WO2018042617A1/fr
Priority to US16/329,988 priority patent/US11607832B2/en
Priority to EP16915177.6A priority patent/EP3508322B1/fr
Priority to KR1020197009372A priority patent/KR102220615B1/ko
Priority to JP2018536637A priority patent/JP7005502B2/ja
Priority to CN201680088944.6A priority patent/CN109661302A/zh
Publication of WO2018042617A1 publication Critical patent/WO2018042617A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/30—Extrusion nozzles or dies
    • B29C48/305—Extrusion nozzles or dies having a wide opening, e.g. for forming sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/49—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using two or more extruders to feed one die or nozzle
    • B29C48/495—Feed-blocks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/07—Flat, e.g. panels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/07—Flat, e.g. panels
    • B29C48/08—Flat, e.g. panels flexible, e.g. films
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
    • B29C48/18—Articles comprising two or more components, e.g. co-extruded layers the components being layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
    • B29C48/18—Articles comprising two or more components, e.g. co-extruded layers the components being layers
    • B29C48/19—Articles comprising two or more components, e.g. co-extruded layers the components being layers the layers being joined at their edges
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/30—Extrusion nozzles or dies
    • B29C48/305—Extrusion nozzles or dies having a wide opening, e.g. for forming sheets
    • B29C48/307—Extrusion nozzles or dies having a wide opening, e.g. for forming sheets specially adapted for bringing together components, e.g. melts within the die
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/14—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
    • B32B37/15—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with at least one layer being manufactured and immediately laminated before reaching its stable state, e.g. in which a layer is extruded and laminated while in semi-molten state
    • B32B37/153—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with at least one layer being manufactured and immediately laminated before reaching its stable state, e.g. in which a layer is extruded and laminated while in semi-molten state at least one layer is extruded and immediately laminated while in semi-molten state
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/12—Articles with an irregular circumference when viewed in cross-section, e.g. window profiles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
    • B29C48/18—Articles comprising two or more components, e.g. co-extruded layers the components being layers
    • B29C48/21—Articles comprising two or more components, e.g. co-extruded layers the components being layers the layers being joined at their surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
    • B29K2023/10—Polymers of propylene
    • B29K2023/12—PP, i.e. polypropylene
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2007/00—Flat articles, e.g. films or sheets
    • B29L2007/002—Panels; Plates; Sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2009/00—Layered products

Definitions

  • the present invention relates to a feed block for supplying a laminate of molten resin to a die.
  • a resin sheet in which a secondary material is laminated only in a partial region in the width direction of the main material constituting the sheet is known.
  • Such a sheet can be manufactured by supplying a secondary material from an orifice or a probe provided inside the die.
  • this manufacturing method has a problem that the structure of the die itself is complicated and the orifice and the probe can be applied only to a sheet having a specific configuration.
  • Patent No. 5220607 discloses a feed block installed upstream of the die.
  • the feed block includes a main material forming channel divided into two parts and a secondary material forming channel provided between the main material forming channels.
  • the outlet surface of the feed block on the die side is provided with two main material forming channel outlets and an auxiliary material forming channel outlet located between them.
  • the main material and the auxiliary material are supplied to the die from the outlet of the feed block, stacked inside the die, formed into a sheet shape, and extruded from the outlet of the die.
  • An object of the present invention is to provide a feed block capable of stably producing a resin sheet in which a main material and a sub-material are laminated.
  • the feed block of the present invention feeds a die of a molten resin laminate in which a secondary material made of a plate-like or sheet-like molten resin is laminated to at least one main material made of a plate-like or sheet-like molten resin. .
  • the secondary material is laminated on at least a part of at least one main material in the width direction.
  • This feed block has at least one main material molding flow path for flowing molten resin to mold the main material into a plate or sheet shape, and flows the molten resin to mold the secondary material into a plate or sheet shape.
  • the main material supplied from the main material molding flow path and the secondary material supplied from the secondary material molding flow path become a laminate at the junction of the main material molding flow path and the secondary material molding flow path. Is fed to the die. As a result, a laminated body of molten resin whose lamination state is adjusted in advance can be supplied to the die. Therefore, according to the feed block of the present invention, it is possible to stably manufacture a resin sheet in which a main material and a sub-material are laminated.
  • FIG. 1 is a schematic configuration diagram of a sheet manufacturing apparatus according to an embodiment of the present invention. It is a schematic diagram of the internal flow path of a feed block. It is the perspective view seen from the inlet side of resin of the feed block shown in FIG. It is the perspective view seen from the exit side of resin of the feed block shown in FIG. It is a perspective view which shows the internal structure seen from the exit side of resin of the feed block shown in FIG. It is a perspective view of the flow path formation block of the feed block shown in FIG. It is the front view seen from the exit side of resin of the flow-path formation block shown in FIG.
  • FIG. 8 is a cross-sectional view of the flow path forming block along the line AA in FIG. 7.
  • FIG. 8 is a cross-sectional view of the flow path forming block along the line BB in FIG. 7.
  • FIG. 8 is a cross-sectional view of the flow path forming block along the line CC in FIG. 7. It is an expanded view of the confluence
  • the “width direction W” is a direction parallel to the width direction of the sheet.
  • the “depth direction D” corresponds to the flow direction of the molten resin and is a direction orthogonal to the resin inlet surface and the resin outlet surface of the feed block.
  • Flow path height is a dimension of the flow path in the direction orthogonal to the width direction W and the depth direction D.
  • FIG. 1 shows a schematic configuration of a sheet manufacturing apparatus according to an embodiment of the present invention.
  • the sheet manufacturing apparatus 1 includes a first extruder 2A that supplies a main material A, a second extruder 2B that supplies a secondary material B, a feed block 3, a die 4, a cooling roll 5, and a winding. And a roll 6.
  • the first extruder 2A kneads the raw material resin of the main material A to form a molten resin of the main material A, and supplies the molten resin of the main material A to the feed block 3 through the main material supply pipe 7A.
  • the second extruder 2B kneads the raw material resin of the secondary material B to form a molten resin of the secondary material B, and supplies the molten resin of the secondary material B to the feed block 3 through the secondary material supply pipe 7B.
  • the feed block 3 forms a laminate of molten resin in which the secondary material B is laminated on a part of the main material A in the width direction W and supplies the molten resin to the die 4.
  • the sheet manufacturing apparatus 1 manufactures a sheet having a so-called encapsulation structure in which the secondary material B is laminated on a part of the width direction W of the primary material A and the secondary material B is covered by the primary material A.
  • a laminated body of molten resin having a configuration corresponding to this is formed.
  • the configuration of the laminated body is not limited to this, and the secondary material may be laminated on at least a part of the width direction of at least one main material.
  • the layer structure of the main material A is not limited.
  • the main material A is formed of only one layer for convenience of explanation, but may be a laminate including two or more layers.
  • the die 4 expands the laminated body of the molten resin supplied from the feed block 3 to a target width in the manifold 8 and pushes it into the atmosphere.
  • the extruded laminated body of molten resin is solidified by the cooling roll 5 and taken up by the take-up roll 6 to form the product sheet S.
  • the die 4 of this embodiment is a T die, but may be an L die or other dies.
  • the width of the die 4 is set, for example, in the range of several hundred mm to 6000 mm in order to directly define the width of the target product sheet S. Since the feed block 3 is for forming a laminate of molten resin supplied to the die 4, its flow path width is relatively narrow, and is generally about 100 mm to 500 mm.
  • FIG. 2 is a schematic diagram of the internal flow path of the feed block
  • FIG. 3 is a perspective view of the feed block as seen from the resin inlet side
  • FIG. 4 is a perspective view of the feed block as seen from the resin outlet side.
  • the laminated body flow path 24 is shown separately from the main material forming flow paths 14 and 15 and the sub-material forming flow path 16, but actually these flow paths 14, 15, 16, 24 are shown. Are connected to each other at the junction 23.
  • the feed block 3 can take various flow path structures according to the configuration of the laminate of molten resin.
  • a configuration in which the main material and the secondary material are merged simultaneously from three directions will be described as an example.
  • the feed block 3 includes first and second main material forming channels 17 and 18 for flowing the molten resin in order to form the molten resin of the main material A into a plate shape or a sheet shape, and the molten resin of the auxiliary material B. It has one sub-material molding flow path 19 through which molten resin flows to form a plate or sheet.
  • the number of main material forming channels is not limited to this, and it is sufficient that at least one main material forming channel is provided.
  • the first main material forming flow path 17, the second main material forming flow path 18, and the secondary material forming flow path 19 extend in the width direction W.
  • the secondary material molding channel 19 is located between the first main material molding channel 17 and the second main material molding channel 18.
  • a laminated body P of a molten resin on which the main material A is laminated is formed.
  • One laminated body flow path 24 for supplying the laminated body P to the die 4 is provided downstream of the merging portion 23.
  • the first main material forming flow path 17 is connected to a cylindrical first main material supply flow path 14 extending in the width direction W.
  • the second main material forming channel 18 is connected to a cylindrical second main material supply channel 15 extending in the width direction W.
  • the secondary material forming channel 19 is connected to a cylindrical secondary material supply channel 16 extending in the width direction W.
  • the first and second main material supply channels 14 and 15 and the auxiliary material supply channel 16 penetrate the feed block 3 in the width direction W, and both ends of the cover member 32 are fixed to the feed block 3 with bolts. (See FIG. 5).
  • a first main material inlet channel 11 extending in the depth direction D is connected to a substantially center in the width direction W of the first main material supply channel 14.
  • a second main material inlet channel 12 extending in the depth direction D is connected to substantially the center in the width direction W of the second main material supply channel 15.
  • a sub-material inlet flow channel 13 extending in the depth direction D is connected to substantially the center in the width direction W of the sub-material supply flow channel 16.
  • the first main material inlet channel 11 has a first main material supply port 20 that opens to the resin inlet surface 25 of the feed block 3 and is connected to the main material supply pipe 7A.
  • the second main material inlet channel 12 has a second main material supply port 21 that opens to the resin inlet surface 25 of the feed block 3 and is connected to the main material supply pipe 7A.
  • the secondary material inlet channel 13 has a secondary material supply port 22 that opens to the resin inlet surface 25 of the feed block 3 and is connected to the secondary material supply pipe 7B.
  • the feed block 3 may have one main material inlet channel, and two main material supply channels may be branched from the one main material inlet channel inside the feed block 3.
  • an opening 27 of the laminated body flow path 24 that communicates with the die 4 is provided in the resin outlet surface 26 of the feed block 3.
  • FIG. 5 is a perspective view showing the internal structure of the feed block 3 as seen from the resin outlet side
  • FIG. 6 is a perspective view of the flow path forming block showing only the flow path forming block extracted from FIG.
  • FIG. 7 is a front view of the flow path forming block as seen from the resin outlet side
  • FIGS. 8A to 8C are flow path forming blocks along the lines AA, BB, and CC of FIG. 7, respectively.
  • the feed block 3 has a housing 28 having an internal space 29 and a flow path forming block 30 accommodated in the internal space 29.
  • the flow path forming block 30 forms a part of the main material forming flow paths 17 and 18 and a part of the auxiliary material forming flow path 19.
  • the flow path forming block 30 may form all of the main material forming flow paths 17 and 18 and the secondary material forming flow path 19.
  • the flow path forming block 30 is composed of a plurality of flow path forming elements 31a to 31d that can be divided. Specifically, the flow path forming block 30 has first to fourth flow path forming elements 31a to 31d extending radially around the joining portion 23 when viewed in the width direction W.
  • the first main material forming flow path 17 is between the second flow path forming element 31b and the third flow path forming element 31c.
  • the secondary material forming flow path 19 is formed between the third flow path forming element 31c and the fourth flow path forming element 31d, and the second main material forming flow path 18 is formed.
  • the first to fourth flow path forming elements 31a to 31d are fixed to the housing 28 by fixing bolts (not shown).
  • the flow path forming elements 31a to 31d are intended to form the flow path of the main material A or the secondary material B therebetween, and therefore do not need to be arranged radially, for example, may be arranged parallel to each other. .
  • a configuration not including the flow path forming block 30 is also included in the feed block of the present invention. If at least one main material molding flow path, secondary material molding flow path, merging portion, and laminated body flow path are formed inside, a laminated body of molten resin is formed inside the feed block. The flow distribution in the width direction W is adjusted and supplied to the die 4. Such a feed block can also achieve the effects of the present invention.
  • the molten resin of the main material A supplied from the first main material inlet channel 11 to the first main material supply channel 14 is filled in the first main material supply channel 14 in the width direction W.
  • the first main material forming channel 17 is connected to the first main material supply channel 14 over the entire width in the width direction W. That is, a gap is provided across the entire width between the first flow path forming element 31a and the second flow path forming element 31b. For this reason, the molten resin of the main material A flows into the junction 23 through the entire width of the gap between the first flow path forming element 31a and the second flow path forming element 31b.
  • the molten resin of the main material A supplied from the second main material inlet channel 12 to the second main material supply channel 15 is filled in the width direction W in the second main material supply channel 15.
  • the second main material forming channel 18 is connected to the second main material supply channel 15 over the entire width in the width direction W. That is, a gap is provided across the entire width between the third flow path forming element 31c and the fourth flow path forming element 31d. For this reason, the molten resin of the main material A flows into the junction 23 through the entire width of the gap between the third flow path forming element 31c and the fourth flow path forming element 31d.
  • the molten resin of the secondary material B supplied from the secondary material inlet channel 13 to the secondary material supply channel 16 is filled in the secondary material supply channel 16 in the width direction W.
  • the second flow path forming element 31b and the third flow path forming element 31c are in contact with each other at a part of the width direction W (FIGS. 8B and 8C). That is, the gap between the second flow path forming element 31b and the third flow path forming element 31c is provided only in a part in the width direction W (FIG. 8A). For this reason, the molten resin of the secondary material B flows into the joining portion 23 through this gap, and a molten resin laminate P is formed in which the secondary material B is laminated only in a part of the width direction W of the main material A.
  • the first to fourth flow path forming elements 31 a to 31 d can be removed from the internal space 29 of the housing 28. Specifically, first, one cover member 32 of the feed block 3 is removed. Next, the fixing bolts of the flow path forming elements 31a to 31d are removed. Subsequently, the flow path forming elements 31 a to 31 d are pulled out from the feed block 3. When attaching other flow path forming elements 31a to 31d to the feed block 3, the reverse procedure may be performed. As described above, since the flow path forming elements 31a to 31d can be easily removed and attached, the position and shape of the secondary material B in the product sheet S can be easily adjusted.
  • FIG. 9A shows a conceptual diagram of the merging portion 23.
  • FIG. 9A is a diagram in which the angle range X of FIG. 6 is developed in a plane, and conceptually shows the cross sections of the first and second main material supply channels 14 and 15 and the auxiliary material supply channel 16 in the junction 23. Show.
  • the merge portion 23 includes a first region 33, a second region 34, and a transition region 35 located between the first region 33 and the second region 34. These regions 33 to 35 are arranged in the width direction W.
  • 8A is a cross-sectional view of the flow path forming elements 31a to 31d in the first region 33
  • FIG. 8B is a cross sectional view of the flow path forming elements 31a to 31d in the transition region 35
  • the 8C is a second region. 34 is a cross-sectional view of the flow path forming elements 31a to 31d in FIG.
  • the secondary material molding channel 19 merges with the first and second main material molding channels 17, 18, and the secondary material molding channel 19 is connected with the first main material molding channel 17. It is sandwiched between the second main material forming flow paths 18.
  • the second region 34 is composed of only the first main material forming channel 17 and the second main material forming channel 18.
  • the transition region 35 includes only the first main material forming channel 17 and the second main material forming channel 18, but the first main material forming channel 17 has a channel height h 17 and a second main material forming channel 17.
  • the flow path height h18 of the material forming flow path 18 increases linearly toward the second region 34.
  • the width direction end region of the secondary material B is formed in a tapered shape or an inclined shape, as described in the embodiment.
  • the channel height h17 of the first main material molding channel 17, the channel height h18 of the second main material molding channel 18, and the secondary material molding channel The total of the 19 channel heights h19 is substantially the same as the layered channel 24, that is, the channel height h34 of the second region 34. Specifically, in the first region 33, the channel height h17 of the first main material molding channel 17, the channel height h18 of the second main material molding channel 18, and the secondary material molding flow The total of the channel height h19 of the channel 19 is 80 to 100% of the channel height h34 of the second region 34.
  • the first and second main material forming channels 17, 18 and the auxiliary material forming flow are provided in the transition region 35 immediately below the auxiliary material forming flow channel 19, that is, in the region adjacent to the auxiliary material forming flow channel 19 in the width direction W.
  • a blank area 36 in which none of the paths 19 exists is formed.
  • the shape of the secondary material forming channel 19 is slightly smaller than the cross-sectional shape of the secondary material B in the laminate P. This is because the flow rate of the main material A is generally larger than the flow rate of the secondary material B (see the example), so the shape and position of the secondary material B in the laminate P can be adjusted by adjusting the shape of the main material forming flow path. This is because the adjustment can be easily performed.
  • the shape of the secondary material forming flow path 19 is matched to the cross-sectional shape of the secondary material B in the laminate P, it is sometimes difficult to obtain the intended shape of the secondary material B because the influence of the flow of the main material A is large.
  • the cross-sectional shape of the main material A in the laminated body P substantially matches the shapes of the first and second main material forming channels 17 and 18, and as a result, the sub-material is formed in a region where the main material A is not formed. B is filled.
  • FIG. 10A shows a main material A and a secondary material B obtained at the outlet of a feed block described in a comparative example, for example, Japanese Patent No. 5220607.
  • the thickness of the main material A is constant in the width direction W.
  • Main material A and secondary material B flow into the die in the relative positional relationship shown in FIG. 10A.
  • FIG. 10C schematically shows the shapes and positional relationships of the main material A and the secondary material B at the joining portion of the feed block of this embodiment
  • FIG. 10D shows the shapes of the main material A and the secondary material B at the outlet of the feed block. The positional relationship is schematically shown.
  • the thickness of the main material A is previously reduced at the position where the secondary material B is laminated, the thickness is made uniform in the width direction W at the outlet of the feed block.
  • a laminate P of the material A and the auxiliary material B is obtained.
  • the laminated body P flows into the die, but since the thickness is made uniform in the width direction W when it flows into the die, the thickness of the resin sheet is also made uniform in the width direction W.
  • the resin merged at the merge section 23 becomes a laminate P and flows through the laminate flow path 24. While the stacked body P flows through the stacked body flow path 24, the flow rate of the stacked body P is made uniform in the width direction W. The fluctuation of the flow velocity in the width direction W of the laminate P is preferably within 10% of the average flow velocity.
  • the secondary material B fills the blank area 36 and forms a shape inclined at the end in the width direction. The secondary material B may be slightly deformed inside the main material A, but its cross-sectional shape does not change greatly.
  • the laminate channel 24 has a substantially rectangular cross section, and the cross-sectional shape is constant in the depth direction D.
  • the laminated body P is extruded with the substantially uniform thickness in the width direction W, and the cross-sectional shape is maintained after it is extruded. Therefore, a product sheet S having a uniform thickness in the width direction W can be obtained regardless of the position and shape of the secondary material B.
  • the configuration of the junction 23 or the flow path forming elements 31a to 31d it is possible to form the laminate P having various layer configurations.
  • various configurations of the merging unit 23 will be described.
  • the first region 33 is located at the center in the width direction W of the merge portion 23.
  • the second region 34 is divided by the first region 33 in the width direction W.
  • Such a joining portion 23 has the shape of the second flow path forming element 31b and the third flow path forming element 31c in contact with each other in the width direction W and not in the center in the width direction W ( A gap can be formed).
  • the first flow path forming element 31a and the fourth flow path forming element 31d may have the same form as in FIG. 9A.
  • the two first regions 33 are located at both ends of the merging portion 23 in the width direction W.
  • the two first regions 33 have the same shape, but may be different from each other.
  • Such a joining portion 23 has the shape of the second flow path forming element 31b and the third flow path forming element 31c in contact with each other at the center in the width direction W and not on both sides in the width direction W. It can be formed by making a gap.
  • a part 191 of the secondary material forming flow path 19 is formed in the transition region 35.
  • the blank area 36 becomes relatively large.
  • Such a merge portion 23 can be formed by changing the size of the gap between the second flow path forming element 31b and the third flow path forming element 31c in the width direction W in a step shape.
  • the secondary material forming channel 191 is not limited to the rectangular cross section shown in FIG. 9D, and may have another shape such as a triangular shape. In that case, the size of the gap between the second flow path forming element 31b and the third flow path forming element 31c may be changed in the width direction W according to the shape of the secondary material forming flow path 191.
  • the first main material forming channel 17 and the second main material forming channel 18 are asymmetric in the width direction W.
  • the first main material forming flow path 17 has a rectangular shape, and the flow path height h18 of the second main material forming flow path 18 decreases in one end region in the width direction W.
  • the channel 19 is offset toward the second main material molding channel 18 side. This embodiment is useful when adjusting the position in the thickness direction of the secondary material B in the product sheet S.
  • the secondary material forming flow path 19 joins the main material forming flow paths 17 and 18 not only in the first region 33 but also in the second region 34.
  • the flow path height h19 of the secondary material forming flow path 19 in the first region 33 is set larger than the flow path height h19 'of the secondary material forming flow path 19 in the second region 34.
  • the sum of the channel heights h17 and h18 of the main material molding channels 17 and 18 in the first region 33 and the channel height h19 of the secondary material molding channel 19 is the main material molding in the second region 34. This is substantially the same as the sum of the channel heights h17, h18 of the channels 17, 18 and the channel height h19 ′ of the secondary material forming channel 19.
  • Such a merging portion 23 changes in the width direction W according to the shape of the secondary material forming flow path 191 by adjusting the size of the gap between the second flow path forming element 31b and the third flow path forming element 31c. Can be formed.
  • one main material forming channel 17 is provided, and the channel height h17 is reduced at one end in the width direction W.
  • the secondary material molding channel 19 is provided on one surface of the main material molding channel 17.
  • This embodiment can be used to manufacture a product sheet S in which the secondary material B is exposed on the sheet surface, that is, has no encapsulation structure (Example)
  • the secondary material was partially laminated in the width direction as an intermediate layer, and a resin laminate in which the width direction end of the secondary material was inclined was formed. Using a plurality of flow path forming blocks, laminates having various configurations were formed.
  • the same resin was used for the main material and the secondary material, and the secondary material was colored with a pigment so that the laminated shape of the molded sheet could be easily observed.
  • the flow path dimensions of the laminated body flow path 24 of the feed block 3 were 100 mm wide and 25 mm thick.
  • the molten resin laminate P supplied from the feed block 3 to the die 4 was extruded from the lip (discharge port) of the die 4.
  • the width of the lip was 1200 mm and the thickness was 1 mm.
  • FIG. 11 shows the shape of the flow path forming block 30 and the cross-sectional shape of the actually obtained sheet observed with an optical microscope.
  • Example 1 is a flow path forming block having the shape of the joining portion shown in FIG. 9A
  • Example 2 is a flow path forming block having the shape of the joining portion shown in FIG. 9E
  • Example 3 is a shape of the joining portion shown in FIG. 9D.
  • the flow path forming block having the shape of the merge portion shown in FIG. 9B was used.
  • the inclined structure of the end portion of the secondary material was clearly formed. The thickness of the secondary material did not vary greatly in the width direction, and a substantially uniform thickness distribution was obtained. From this, it can be inferred that the laminated state of the main material and the secondary material formed by the feed block 3 was substantially maintained inside the die 4.
  • the experiment of each embodiment could be carried out in substantially 1.5 hours. Specifically, after one experiment is completed, the first and second extruders 2A and 2B are stopped, and it is confirmed that the resin pressure in the feed block 3 has sufficiently decreased, and the flow path forming block is replaced. The work was performed, and then the temperature was raised for about 1 hour in order to stabilize the temperature of the extruder, and the next experiment was started. The replacement work of the flow path forming block could be easily performed in about 30 minutes. As described above, by using the feed block of the present embodiment, the lamination condition of the secondary material B could be easily adjusted in a short time.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

L'objectif de la présente invention est de fournir un bloc d'alimentation capable de fabriquer de façon stable une feuille de résine dans laquelle un matériau principal et un sous-matériau sont stratifiés ensemble. Le bloc d'alimentation fournit à une matrice un stratifié de résine fondue P dans lequel au moins un matériau principal A constitué d'une résine fondue en forme de plaque ou de feuille et d'un sous-matériau B constitué d'une résine fondue en forme de plaque ou en forme de feuille sont stratifiés ensemble. Dans le stratifié P, le sous-matériau B est stratifié dans au moins une partie dans une direction de largeur W du ou des matériaux principaux A. Le bloc d'alimentation présente au moins un trajet d'écoulement de moulage de matériau principal (17, 18) amenant la résine fondue à s'écouler pour mouler le matériau principal A en une forme de plaque ou de feuille, un trajet d'écoulement de moulage de sous-matériau (19) amenant la résine fondue à s'écouler pour mouler le sous-matériau B en une forme de plaque ou de feuille, une partie de fusion (23) dudit au moins un trajet d'écoulement de moulage de matériau principal (17, 18) et le trajet d'écoulement de moulage de sous-matériau (19) pour former le stratifié P, et un trajet d'écoulement de stratifié (24) qui est positionné en aval de la partie de fusion (23) et fournit le stratifié P à la matrice.
PCT/JP2016/075785 2016-09-02 2016-09-02 Bloc d'alimentation et dispositif de fabrication de feuille pourvu de celui-ci, et procédé de fabrication de feuille WO2018042617A1 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
PCT/JP2016/075785 WO2018042617A1 (fr) 2016-09-02 2016-09-02 Bloc d'alimentation et dispositif de fabrication de feuille pourvu de celui-ci, et procédé de fabrication de feuille
US16/329,988 US11607832B2 (en) 2016-09-02 2016-09-02 Feed block and sheet manufacturing apparatus provided with the same, and method of manufacturing sheet
EP16915177.6A EP3508322B1 (fr) 2016-09-02 2016-09-02 Bloc d'alimentation et dispositif de fabrication de feuille pourvu de celui-ci, et procédé de fabrication de feuille
KR1020197009372A KR102220615B1 (ko) 2016-09-02 2016-09-02 피드 블록과 이것을 구비한 시트의 제조 장치, 및 시트의 제조 방법
JP2018536637A JP7005502B2 (ja) 2016-09-02 2016-09-02 フィードブロックとこれを備えたシートの製造装置、及びシートの製造方法
CN201680088944.6A CN109661302A (zh) 2016-09-02 2016-09-02 供给块和设置有该供给块的片材制造装置以及制造片材的方法

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PCT/JP2016/075785 WO2018042617A1 (fr) 2016-09-02 2016-09-02 Bloc d'alimentation et dispositif de fabrication de feuille pourvu de celui-ci, et procédé de fabrication de feuille

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EP (1) EP3508322B1 (fr)
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KR102158011B1 (ko) * 2020-04-10 2020-09-21 현 동 장 다중 평면 접합용 다이가 구비된 압출기

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CN109661302A (zh) 2019-04-19
EP3508322B1 (fr) 2022-12-14
EP3508322A4 (fr) 2020-05-13
US11607832B2 (en) 2023-03-21
EP3508322A1 (fr) 2019-07-10
US20190202105A1 (en) 2019-07-04
KR20190046930A (ko) 2019-05-07
KR102220615B1 (ko) 2021-02-25
JP7005502B2 (ja) 2022-01-21
JPWO2018042617A1 (ja) 2019-06-24

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